31.59% is the change from 630 to 829
Calculation steps:
[( 829 - 630 ) ÷ 630] x 100 = 31.59%
Formula
Percentage change = [(829 - 630) / 630] x 100
Subtract the new number by the original number
829 - 630 = 199
199 ÷ 630 = 0.31587301587301586
0.31587301587301586 x 100 = 31.59%