-87.81% is the change from 648 to 79
Calculation steps:
[( 79 - 648 ) ÷ 648] x 100 = -87.81%
Formula
Percentage change = [(79 - 648) / 648] x 100
Subtract the new number by the original number
79 - 648 = -569
-569 ÷ 648 = -0.8780864197530864
-0.8780864197530864 x 100 = -87.81%