-86.46% is the change from 731 to 99
Calculation steps:
[( 99 - 731 ) ÷ 731] x 100 = -86.46%
Formula
Percentage change = [(99 - 731) / 731] x 100
Subtract the new number by the original number
99 - 731 = -632
-632 ÷ 731 = -0.8645690834473324
-0.8645690834473324 x 100 = -86.46%