40.62% is the change from 645 to 907
Calculation steps:
[( 907 - 645 ) ÷ 645] x 100 = 40.62%
Formula
Percentage change = [(907 - 645) / 645] x 100
Subtract the new number by the original number
907 - 645 = 262
262 ÷ 645 = 0.4062015503875969
0.4062015503875969 x 100 = 40.62%