-41.17% is the change from 991 to 583
Calculation steps:
[( 583 - 991 ) ÷ 991] x 100 = -41.17%
Formula
Percentage change = [(583 - 991) / 991] x 100
Subtract the new number by the original number
583 - 991 = -408
-408 ÷ 991 = -0.4117053481331988
-0.4117053481331988 x 100 = -41.17%