271.25% is the change from 80 to 297
Calculation steps:
[( 297 - 80 ) ÷ 80] x 100 = 271.25%
Formula
Percentage change = [(297 - 80) / 80] x 100
Subtract the new number by the original number
297 - 80 = 217
217 ÷ 80 = 2.7125
2.7125 x 100 = 271.25%
Example