21.57% is the change from 700 to 851
Calculation steps:
[( 851 - 700 ) ÷ 700] x 100 = 21.57%
Formula
Percentage change = [(851 - 700) / 700] x 100
Subtract the new number by the original number
851 - 700 = 151
151 ÷ 700 = 0.21571428571428572
0.21571428571428572 x 100 = 21.57%