28.3% is the change from 636 to 816
Calculation steps:
[( 816 - 636 ) ÷ 636] x 100 = 28.3%
Formula
Percentage change = [(816 - 636) / 636] x 100
Subtract the new number by the original number
816 - 636 = 180
180 ÷ 636 = 0.2830188679245283
0.2830188679245283 x 100 = 28.3%