Many Pokemon Go players reported that catching Pokemon got more difficult after the resent update, but it is not ensured. Since they acquired techniques to throw Pokeball and catch Pokemon, catching Pokemon seems to be easier for them. However, they noted they cannot catch Pokemon as easily before. One of rumors is that the resent update decreased Pokemon's catch rate. However, there is no evidence.
Since the latest Pokemon Go update its way too hard to catch low-level Rattatas and Pidgeys. What gives?
Ugh it's so much harder to catch Pokemon now with the new Pokemon Go update
Like the uncertain decrease in capture rate, players stated that wild Pokemon tend to escape easily. The accuracy of this argument is unsure. However, since each Pokemon has escape rate as a hidden value, the increase in escape rate could be happened.
Some reports that throwing curveballs increase catch rate by 20%. Other ways to throw Pokeballs are also considered as adding catch rate bonus as the following:
For example, the catch rate of Pidgey is considered as 40%. If you throw curveballs, the catch rate increase to 60%. If you throw excellent throw, the catch rate is over 100%, so you can capture Pidgey successfully at 100 percent.
It has been said that catch rate increases as trainer level is higher. That means if your trainer level is higher relative to wild Pokemon's level (or CP), catch rate become easier. It is possible to happen, but there is no data to make sure that.
