30.57% is the change from 651 to 850
Calculation steps:
[( 850 - 651 ) ÷ 651] x 100 = 30.57%
Formula
Percentage change = [(850 - 651) / 651] x 100
Subtract the new number by the original number
850 - 651 = 199
199 ÷ 651 = 0.30568356374807987
0.30568356374807987 x 100 = 30.57%