-26.99% is the change from 678 to 495
Calculation steps:
[( 495 - 678 ) ÷ 678] x 100 = -26.99%
Formula
Percentage change = [(495 - 678) / 678] x 100
Subtract the new number by the original number
495 - 678 = -183
-183 ÷ 678 = -0.26991150442477874
-0.26991150442477874 x 100 = -26.99%