-85.76% is the change from 646 to 92
Calculation steps:
[( 92 - 646 ) ÷ 646] x 100 = -85.76%
Formula
Percentage change = [(92 - 646) / 646] x 100
Subtract the new number by the original number
92 - 646 = -554
-554 ÷ 646 = -0.8575851393188855
-0.8575851393188855 x 100 = -85.76%