-6.55% is the change from 840 to 785
Calculation steps:
[( 785 - 840 ) ÷ 840] x 100 = -6.55%
Formula
Percentage change = [(785 - 840) / 840] x 100
Subtract the new number by the original number
785 - 840 = -55
-55 ÷ 840 = -0.06547619047619048
-0.06547619047619048 x 100 = -6.55%