-69.92% is the change from 266 to 80
Calculation steps:
[( 80 - 266 ) ÷ 266] x 100 = -69.92%
Formula
Percentage change = [(80 - 266) / 266] x 100
Subtract the new number by the original number
80 - 266 = -186
-186 ÷ 266 = -0.6992481203007519
-0.6992481203007519 x 100 = -69.92%