39.42% is the change from 624 to 870
Calculation steps:
[( 870 - 624 ) ÷ 624] x 100 = 39.42%
Formula
Percentage change = [(870 - 624) / 624] x 100
Subtract the new number by the original number
870 - 624 = 246
246 ÷ 624 = 0.3942307692307692
0.3942307692307692 x 100 = 39.42%