650% is the change from 18 to 135
Calculation steps:
[( 135 - 18 ) ÷ 18] x 100 = 650%
Formula
Percentage change = [(135 - 18) / 18] x 100
Subtract the new number by the original number
135 - 18 = 117
117 ÷ 18 = 6.5
6.5 x 100 = 650%
Example