20.85% is the change from 662 to 800
Calculation steps:
[( 800 - 662 ) ÷ 662] x 100 = 20.85%
Formula
Percentage change = [(800 - 662) / 662] x 100
Subtract the new number by the original number
800 - 662 = 138
138 ÷ 662 = 0.2084592145015106
0.2084592145015106 x 100 = 20.85%