-9.64% is the change from 840 to 759
Calculation steps:
[( 759 - 840 ) ÷ 840] x 100 = -9.64%
Formula
Percentage change = [(759 - 840) / 840] x 100
Subtract the new number by the original number
759 - 840 = -81
-81 ÷ 840 = -0.09642857142857143
-0.09642857142857143 x 100 = -9.64%