34.75% is the change from 636 to 857
Calculation steps:
[( 857 - 636 ) ÷ 636] x 100 = 34.75%
Formula
Percentage change = [(857 - 636) / 636] x 100
Subtract the new number by the original number
857 - 636 = 221
221 ÷ 636 = 0.3474842767295597
0.3474842767295597 x 100 = 34.75%