-95.35% is the change from 667 to 31
Calculation steps:
[( 31 - 667 ) ÷ 667] x 100 = -95.35%
Formula
Percentage change = [(31 - 667) / 667] x 100
Subtract the new number by the original number
31 - 667 = -636
-636 ÷ 667 = -0.9535232383808095
-0.9535232383808095 x 100 = -95.35%