155% is the change from 80 to 204
Calculation steps:
[( 204 - 80 ) ÷ 80] x 100 = 155%
Formula
Percentage change = [(204 - 80) / 80] x 100
Subtract the new number by the original number
204 - 80 = 124
124 ÷ 80 = 1.55
1.55 x 100 = 155%
Example