-75.78% is the change from 991 to 240
Calculation steps:
[( 240 - 991 ) ÷ 991] x 100 = -75.78%
Formula
Percentage change = [(240 - 991) / 991] x 100
Subtract the new number by the original number
240 - 991 = -751
-751 ÷ 991 = -0.7578203834510595
-0.7578203834510595 x 100 = -75.78%