21.36% is the change from 660 to 801
Calculation steps:
[( 801 - 660 ) ÷ 660] x 100 = 21.36%
Formula
Percentage change = [(801 - 660) / 660] x 100
Subtract the new number by the original number
801 - 660 = 141
141 ÷ 660 = 0.21363636363636362
0.21363636363636362 x 100 = 21.36%