-85.1% is the change from 678 to 101
Calculation steps:
[( 101 - 678 ) ÷ 678] x 100 = -85.1%
Formula
Percentage change = [(101 - 678) / 678] x 100
Subtract the new number by the original number
101 - 678 = -577
-577 ÷ 678 = -0.8510324483775811
-0.8510324483775811 x 100 = -85.1%