-34.96% is the change from 266 to 173
Calculation steps:
[( 173 - 266 ) ÷ 266] x 100 = -34.96%
Formula
Percentage change = [(173 - 266) / 266] x 100
Subtract the new number by the original number
173 - 266 = -93
-93 ÷ 266 = -0.34962406015037595
-0.34962406015037595 x 100 = -34.96%