669.51% is the change from 82 to 631
Calculation steps:
[( 631 - 82 ) ÷ 82] x 100 = 669.51%
Formula
Percentage change = [(631 - 82) / 82] x 100
Subtract the new number by the original number
631 - 82 = 549
549 ÷ 82 = 6.695121951219512
6.695121951219512 x 100 = 669.51%