-36.09% is the change from 266 to 170
Calculation steps:
[( 170 - 266 ) ÷ 266] x 100 = -36.09%
Formula
Percentage change = [(170 - 266) / 266] x 100
Subtract the new number by the original number
170 - 266 = -96
-96 ÷ 266 = -0.3609022556390977
-0.3609022556390977 x 100 = -36.09%