253.52% is the change from 71 to 251
Calculation steps:
[( 251 - 71 ) ÷ 71] x 100 = 253.52%
Formula
Percentage change = [(251 - 71) / 71] x 100
Subtract the new number by the original number
251 - 71 = 180
180 ÷ 71 = 2.535211267605634
2.535211267605634 x 100 = 253.52%