-68.41% is the change from 687 to 217
Calculation steps:
[( 217 - 687 ) ÷ 687] x 100 = -68.41%
Formula
Percentage change = [(217 - 687) / 687] x 100
Subtract the new number by the original number
217 - 687 = -470
-470 ÷ 687 = -0.6841339155749636
-0.6841339155749636 x 100 = -68.41%