21.03% is the change from 252 to 305
Calculation steps:
[( 305 - 252 ) ÷ 252] x 100 = 21.03%
Formula
Percentage change = [(305 - 252) / 252] x 100
Subtract the new number by the original number
305 - 252 = 53
53 ÷ 252 = 0.21031746031746032
0.21031746031746032 x 100 = 21.03%