-82.04% is the change from 646 to 116
Calculation steps:
[( 116 - 646 ) ÷ 646] x 100 = -82.04%
Formula
Percentage change = [(116 - 646) / 646] x 100
Subtract the new number by the original number
116 - 646 = -530
-530 ÷ 646 = -0.8204334365325078
-0.8204334365325078 x 100 = -82.04%