-91.05% is the change from 961 to 86
Calculation steps:
[( 86 - 961 ) ÷ 961] x 100 = -91.05%
Formula
Percentage change = [(86 - 961) / 961] x 100
Subtract the new number by the original number
86 - 961 = -875
-875 ÷ 961 = -0.9105098855359001
-0.9105098855359001 x 100 = -91.05%