-83.94% is the change from 193 to 31
Calculation steps:
[( 31 - 193 ) ÷ 193] x 100 = -83.94%
Formula
Percentage change = [(31 - 193) / 193] x 100
Subtract the new number by the original number
31 - 193 = -162
-162 ÷ 193 = -0.8393782383419689
-0.8393782383419689 x 100 = -83.94%