53.23% is the change from 620 to 950
Calculation steps:
[( 950 - 620 ) ÷ 620] x 100 = 53.23%
Formula
Percentage change = [(950 - 620) / 620] x 100
Subtract the new number by the original number
950 - 620 = 330
330 ÷ 620 = 0.532258064516129
0.532258064516129 x 100 = 53.23%