-67.98% is the change from 687 to 220
Calculation steps:
[( 220 - 687 ) ÷ 687] x 100 = -67.98%
Formula
Percentage change = [(220 - 687) / 687] x 100
Subtract the new number by the original number
220 - 687 = -467
-467 ÷ 687 = -0.6797671033478894
-0.6797671033478894 x 100 = -67.98%