-88.13% is the change from 657 to 78
Calculation steps:
[( 78 - 657 ) ÷ 657] x 100 = -88.13%
Formula
Percentage change = [(78 - 657) / 657] x 100
Subtract the new number by the original number
78 - 657 = -579
-579 ÷ 657 = -0.8812785388127854
-0.8812785388127854 x 100 = -88.13%