-27.63% is the change from 684 to 495
Calculation steps:
[( 495 - 684 ) ÷ 684] x 100 = -27.63%
Formula
Percentage change = [(495 - 684) / 684] x 100
Subtract the new number by the original number
495 - 684 = -189
-189 ÷ 684 = -0.27631578947368424
-0.27631578947368424 x 100 = -27.63%