-74.24% is the change from 687 to 177
Calculation steps:
[( 177 - 687 ) ÷ 687] x 100 = -74.24%
Formula
Percentage change = [(177 - 687) / 687] x 100
Subtract the new number by the original number
177 - 687 = -510
-510 ÷ 687 = -0.74235807860262
-0.74235807860262 x 100 = -74.24%