32.56% is the change from 645 to 855
Calculation steps:
[( 855 - 645 ) ÷ 645] x 100 = 32.56%
Formula
Percentage change = [(855 - 645) / 645] x 100
Subtract the new number by the original number
855 - 645 = 210
210 ÷ 645 = 0.32558139534883723
0.32558139534883723 x 100 = 32.56%