279.77% is the change from 257 to 976
Calculation steps:
[( 976 - 257 ) ÷ 257] x 100 = 279.77%
Formula
Percentage change = [(976 - 257) / 257] x 100
Subtract the new number by the original number
976 - 257 = 719
719 ÷ 257 = 2.7976653696498053
2.7976653696498053 x 100 = 279.77%