-91.46% is the change from 949 to 81
Calculation steps:
[( 81 - 949 ) ÷ 949] x 100 = -91.46%
Formula
Percentage change = [(81 - 949) / 949] x 100
Subtract the new number by the original number
81 - 949 = -868
-868 ÷ 949 = -0.9146469968387777
-0.9146469968387777 x 100 = -91.46%