61.41% is the change from 539 to 870
Calculation steps:
[( 870 - 539 ) ÷ 539] x 100 = 61.41%
Formula
Percentage change = [(870 - 539) / 539] x 100
Subtract the new number by the original number
870 - 539 = 331
331 ÷ 539 = 0.614100185528757
0.614100185528757 x 100 = 61.41%