245% is the change from 80 to 276
Calculation steps:
[( 276 - 80 ) ÷ 80] x 100 = 245%
Formula
Percentage change = [(276 - 80) / 80] x 100
Subtract the new number by the original number
276 - 80 = 196
196 ÷ 80 = 2.45
2.45 x 100 = 245%
Example