-91.38% is the change from 998 to 86
Calculation steps:
[( 86 - 998 ) ÷ 998] x 100 = -91.38%
Formula
Percentage change = [(86 - 998) / 998] x 100
Subtract the new number by the original number
86 - 998 = -912
-912 ÷ 998 = -0.9138276553106213
-0.9138276553106213 x 100 = -91.38%