-21.69% is the change from 687 to 538
Calculation steps:
[( 538 - 687 ) ÷ 687] x 100 = -21.69%
Formula
Percentage change = [(538 - 687) / 687] x 100
Subtract the new number by the original number
538 - 687 = -149
-149 ÷ 687 = -0.21688500727802038
-0.21688500727802038 x 100 = -21.69%