-89.47% is the change from 266 to 28
Calculation steps:
[( 28 - 266 ) ÷ 266] x 100 = -89.47%
Formula
Percentage change = [(28 - 266) / 266] x 100
Subtract the new number by the original number
28 - 266 = -238
-238 ÷ 266 = -0.8947368421052632
-0.8947368421052632 x 100 = -89.47%