679.52% is the change from 83 to 647
Calculation steps:
[( 647 - 83 ) ÷ 83] x 100 = 679.52%
Formula
Percentage change = [(647 - 83) / 83] x 100
Subtract the new number by the original number
647 - 83 = 564
564 ÷ 83 = 6.795180722891566
6.795180722891566 x 100 = 679.52%