-90.1% is the change from 788 to 78
Calculation steps:
[( 78 - 788 ) ÷ 788] x 100 = -90.1%
Formula
Percentage change = [(78 - 788) / 788] x 100
Subtract the new number by the original number
78 - 788 = -710
-710 ÷ 788 = -0.9010152284263959
-0.9010152284263959 x 100 = -90.1%