-97.74% is the change from 266 to 6
Calculation steps:
[( 6 - 266 ) ÷ 266] x 100 = -97.74%
Formula
Percentage change = [(6 - 266) / 266] x 100
Subtract the new number by the original number
6 - 266 = -260
-260 ÷ 266 = -0.9774436090225563
-0.9774436090225563 x 100 = -97.74%