35.08% is the change from 630 to 851
Calculation steps:
[( 851 - 630 ) ÷ 630] x 100 = 35.08%
Formula
Percentage change = [(851 - 630) / 630] x 100
Subtract the new number by the original number
851 - 630 = 221
221 ÷ 630 = 0.35079365079365077
0.35079365079365077 x 100 = 35.08%
Example