-85.45% is the change from 275 to 40
Calculation steps:
[( 40 - 275 ) ÷ 275] x 100 = -85.45%
Formula
Percentage change = [(40 - 275) / 275] x 100
Subtract the new number by the original number
40 - 275 = -235
-235 ÷ 275 = -0.8545454545454545
-0.8545454545454545 x 100 = -85.45%