255.84% is the change from 77 to 274
Calculation steps:
[( 274 - 77 ) ÷ 77] x 100 = 255.84%
Formula
Percentage change = [(274 - 77) / 77] x 100
Subtract the new number by the original number
274 - 77 = 197
197 ÷ 77 = 2.5584415584415585
2.5584415584415585 x 100 = 255.84%