34.42% is the change from 645 to 867
Calculation steps:
[( 867 - 645 ) ÷ 645] x 100 = 34.42%
Formula
Percentage change = [(867 - 645) / 645] x 100
Subtract the new number by the original number
867 - 645 = 222
222 ÷ 645 = 0.34418604651162793
0.34418604651162793 x 100 = 34.42%