-94.15% is the change from 650 to 38
Calculation steps:
[( 38 - 650 ) ÷ 650] x 100 = -94.15%
Formula
Percentage change = [(38 - 650) / 650] x 100
Subtract the new number by the original number
38 - 650 = -612
-612 ÷ 650 = -0.9415384615384615
-0.9415384615384615 x 100 = -94.15%