257.3% is the change from 274 to 979
Calculation steps:
[( 979 - 274 ) ÷ 274] x 100 = 257.3%
Formula
Percentage change = [(979 - 274) / 274] x 100
Subtract the new number by the original number
979 - 274 = 705
705 ÷ 274 = 2.572992700729927
2.572992700729927 x 100 = 257.3%