497.22% is the change from 108 to 645
Calculation steps:
[( 645 - 108 ) ÷ 108] x 100 = 497.22%
Formula
Percentage change = [(645 - 108) / 108] x 100
Subtract the new number by the original number
645 - 108 = 537
537 ÷ 108 = 4.972222222222222
4.972222222222222 x 100 = 497.22%