702.41% is the change from 83 to 666
Calculation steps:
[( 666 - 83 ) ÷ 83] x 100 = 702.41%
Formula
Percentage change = [(666 - 83) / 83] x 100
Subtract the new number by the original number
666 - 83 = 583
583 ÷ 83 = 7.024096385542169
7.024096385542169 x 100 = 702.41%