-5.95% is the change from 840 to 790
Calculation steps:
[( 790 - 840 ) ÷ 840] x 100 = -5.95%
Formula
Percentage change = [(790 - 840) / 840] x 100
Subtract the new number by the original number
790 - 840 = -50
-50 ÷ 840 = -0.05952380952380952
-0.05952380952380952 x 100 = -5.95%