-90.94% is the change from 949 to 86
Calculation steps:
[( 86 - 949 ) ÷ 949] x 100 = -90.94%
Formula
Percentage change = [(86 - 949) / 949] x 100
Subtract the new number by the original number
86 - 949 = -863
-863 ÷ 949 = -0.9093782929399368
-0.9093782929399368 x 100 = -90.94%