246.79% is the change from 280 to 971
Calculation steps:
[( 971 - 280 ) ÷ 280] x 100 = 246.79%
Formula
Percentage change = [(971 - 280) / 280] x 100
Subtract the new number by the original number
971 - 280 = 691
691 ÷ 280 = 2.467857142857143
2.467857142857143 x 100 = 246.79%