37.01% is the change from 635 to 870
Calculation steps:
[( 870 - 635 ) ÷ 635] x 100 = 37.01%
Formula
Percentage change = [(870 - 635) / 635] x 100
Subtract the new number by the original number
870 - 635 = 235
235 ÷ 635 = 0.3700787401574803
0.3700787401574803 x 100 = 37.01%