-15.14% is the change from 991 to 841
Calculation steps:
[( 841 - 991 ) ÷ 991] x 100 = -15.14%
Formula
Percentage change = [(841 - 991) / 991] x 100
Subtract the new number by the original number
841 - 991 = -150
-150 ÷ 991 = -0.15136226034308778
-0.15136226034308778 x 100 = -15.14%