-29.4% is the change from 687 to 485
Calculation steps:
[( 485 - 687 ) ÷ 687] x 100 = -29.4%
Formula
Percentage change = [(485 - 687) / 687] x 100
Subtract the new number by the original number
485 - 687 = -202
-202 ÷ 687 = -0.2940320232896652
-0.2940320232896652 x 100 = -29.4%