-91.04% is the change from 949 to 85
Calculation steps:
[( 85 - 949 ) ÷ 949] x 100 = -91.04%
Formula
Percentage change = [(85 - 949) / 949] x 100
Subtract the new number by the original number
85 - 949 = -864
-864 ÷ 949 = -0.9104320337197049
-0.9104320337197049 x 100 = -91.04%