-94.47% is the change from 687 to 38
Calculation steps:
[( 38 - 687 ) ÷ 687] x 100 = -94.47%
Formula
Percentage change = [(38 - 687) / 687] x 100
Subtract the new number by the original number
38 - 687 = -649
-649 ÷ 687 = -0.9446870451237264
-0.9446870451237264 x 100 = -94.47%