42.7% is the change from 452 to 645
Calculation steps:
[( 645 - 452 ) ÷ 452] x 100 = 42.7%
Formula
Percentage change = [(645 - 452) / 452] x 100
Subtract the new number by the original number
645 - 452 = 193
193 ÷ 452 = 0.4269911504424779
0.4269911504424779 x 100 = 42.7%