30.15% is the change from 660 to 859
Calculation steps:
[( 859 - 660 ) ÷ 660] x 100 = 30.15%
Formula
Percentage change = [(859 - 660) / 660] x 100
Subtract the new number by the original number
859 - 660 = 199
199 ÷ 660 = 0.3015151515151515
0.3015151515151515 x 100 = 30.15%