-35.29% is the change from 986 to 638
Calculation steps:
[( 638 - 986 ) ÷ 986] x 100 = -35.29%
Formula
Percentage change = [(638 - 986) / 986] x 100
Subtract the new number by the original number
638 - 986 = -348
-348 ÷ 986 = -0.35294117647058826
-0.35294117647058826 x 100 = -35.29%