-9.52% is the change from 840 to 760
Calculation steps:
[( 760 - 840 ) ÷ 840] x 100 = -9.52%
Formula
Percentage change = [(760 - 840) / 840] x 100
Subtract the new number by the original number
760 - 840 = -80
-80 ÷ 840 = -0.09523809523809523
-0.09523809523809523 x 100 = -9.52%