352.11% is the change from 71 to 321
Calculation steps:
[( 321 - 71 ) ÷ 71] x 100 = 352.11%
Formula
Percentage change = [(321 - 71) / 71] x 100
Subtract the new number by the original number
321 - 71 = 250
250 ÷ 71 = 3.5211267605633805
3.5211267605633805 x 100 = 352.11%