807.04% is the change from 71 to 644
Calculation steps:
[( 644 - 71 ) ÷ 71] x 100 = 807.04%
Formula
Percentage change = [(644 - 71) / 71] x 100
Subtract the new number by the original number
644 - 71 = 573
573 ÷ 71 = 8.070422535211268
8.070422535211268 x 100 = 807.04%