689.02% is the change from 82 to 647
Calculation steps:
[( 647 - 82 ) ÷ 82] x 100 = 689.02%
Formula
Percentage change = [(647 - 82) / 82] x 100
Subtract the new number by the original number
647 - 82 = 565
565 ÷ 82 = 6.890243902439025
6.890243902439025 x 100 = 689.02%