217.5% is the change from 80 to 254
Calculation steps:
[( 254 - 80 ) ÷ 80] x 100 = 217.5%
Formula
Percentage change = [(254 - 80) / 80] x 100
Subtract the new number by the original number
254 - 80 = 174
174 ÷ 80 = 2.175
2.175 x 100 = 217.5%
Example