-71.8% is the change from 266 to 75
Calculation steps:
[( 75 - 266 ) ÷ 266] x 100 = -71.8%
Formula
Percentage change = [(75 - 266) / 266] x 100
Subtract the new number by the original number
75 - 266 = -191
-191 ÷ 266 = -0.7180451127819549
-0.7180451127819549 x 100 = -71.8%