126.25% is the change from 80 to 181
Calculation steps:
[( 181 - 80 ) ÷ 80] x 100 = 126.25%
Formula
Percentage change = [(181 - 80) / 80] x 100
Subtract the new number by the original number
181 - 80 = 101
101 ÷ 80 = 1.2625
1.2625 x 100 = 126.25%
Example