33.48% is the change from 660 to 881
Calculation steps:
[( 881 - 660 ) ÷ 660] x 100 = 33.48%
Formula
Percentage change = [(881 - 660) / 660] x 100
Subtract the new number by the original number
881 - 660 = 221
221 ÷ 660 = 0.33484848484848484
0.33484848484848484 x 100 = 33.48%