-34.35% is the change from 687 to 451
Calculation steps:
[( 451 - 687 ) ÷ 687] x 100 = -34.35%
Formula
Percentage change = [(451 - 687) / 687] x 100
Subtract the new number by the original number
451 - 687 = -236
-236 ÷ 687 = -0.3435225618631732
-0.3435225618631732 x 100 = -34.35%