30.72% is the change from 651 to 851
Calculation steps:
[( 851 - 651 ) ÷ 651] x 100 = 30.72%
Formula
Percentage change = [(851 - 651) / 651] x 100
Subtract the new number by the original number
851 - 651 = 200
200 ÷ 651 = 0.30721966205837176
0.30721966205837176 x 100 = 30.72%