-31.59% is the change from 687 to 470
Calculation steps:
[( 470 - 687 ) ÷ 687] x 100 = -31.59%
Formula
Percentage change = [(470 - 687) / 687] x 100
Subtract the new number by the original number
470 - 687 = -217
-217 ÷ 687 = -0.3158660844250364
-0.3158660844250364 x 100 = -31.59%