50% is the change from 58 to 87
Calculation steps:
[( 87 - 58 ) ÷ 58] x 100 = 50%
Formula
Percentage change = [(87 - 58) / 58] x 100
Subtract the new number by the original number
87 - 58 = 29
29 ÷ 58 = 0.5
0.5 x 100 = 50%
Example