-97.13% is the change from 662 to 19
Calculation steps:
[( 19 - 662 ) ÷ 662] x 100 = -97.13%
Formula
Percentage change = [(19 - 662) / 662] x 100
Subtract the new number by the original number
19 - 662 = -643
-643 ÷ 662 = -0.9712990936555891
-0.9712990936555891 x 100 = -97.13%