255.07% is the change from 276 to 980
Calculation steps:
[( 980 - 276 ) ÷ 276] x 100 = 255.07%
Formula
Percentage change = [(980 - 276) / 276] x 100
Subtract the new number by the original number
980 - 276 = 704
704 ÷ 276 = 2.550724637681159
2.550724637681159 x 100 = 255.07%