50.79% is the change from 630 to 950
Calculation steps:
[( 950 - 630 ) ÷ 630] x 100 = 50.79%
Formula
Percentage change = [(950 - 630) / 630] x 100
Subtract the new number by the original number
950 - 630 = 320
320 ÷ 630 = 0.5079365079365079
0.5079365079365079 x 100 = 50.79%