-82.51% is the change from 949 to 166
Calculation steps:
[( 166 - 949 ) ÷ 949] x 100 = -82.51%
Formula
Percentage change = [(166 - 949) / 949] x 100
Subtract the new number by the original number
166 - 949 = -783
-783 ÷ 949 = -0.8250790305584826
-0.8250790305584826 x 100 = -82.51%