29.39% is the change from 660 to 854
Calculation steps:
[( 854 - 660 ) ÷ 660] x 100 = 29.39%
Formula
Percentage change = [(854 - 660) / 660] x 100
Subtract the new number by the original number
854 - 660 = 194
194 ÷ 660 = 0.29393939393939394
0.29393939393939394 x 100 = 29.39%