255.13% is the change from 78 to 277
Calculation steps:
[( 277 - 78 ) ÷ 78] x 100 = 255.13%
Formula
Percentage change = [(277 - 78) / 78] x 100
Subtract the new number by the original number
277 - 78 = 199
199 ÷ 78 = 2.551282051282051
2.551282051282051 x 100 = 255.13%