190% is the change from 30 to 87
Calculation steps:
[( 87 - 30 ) ÷ 30] x 100 = 190%
Formula
Percentage change = [(87 - 30) / 30] x 100
Subtract the new number by the original number
87 - 30 = 57
57 ÷ 30 = 1.9
1.9 x 100 = 190%
Example