258.3% is the change from 271 to 971
Calculation steps:
[( 971 - 271 ) ÷ 271] x 100 = 258.3%
Formula
Percentage change = [(971 - 271) / 271] x 100
Subtract the new number by the original number
971 - 271 = 700
700 ÷ 271 = 2.5830258302583027
2.5830258302583027 x 100 = 258.3%