-91.35% is the change from 266 to 23
Calculation steps:
[( 23 - 266 ) ÷ 266] x 100 = -91.35%
Formula
Percentage change = [(23 - 266) / 266] x 100
Subtract the new number by the original number
23 - 266 = -243
-243 ÷ 266 = -0.9135338345864662
-0.9135338345864662 x 100 = -91.35%