-94.22% is the change from 657 to 38
Calculation steps:
[( 38 - 657 ) ÷ 657] x 100 = -94.22%
Formula
Percentage change = [(38 - 657) / 657] x 100
Subtract the new number by the original number
38 - 657 = -619
-619 ÷ 657 = -0.9421613394216134
-0.9421613394216134 x 100 = -94.22%