-55.66% is the change from 663 to 294
Calculation steps:
[( 294 - 663 ) ÷ 663] x 100 = -55.66%
Formula
Percentage change = [(294 - 663) / 663] x 100
Subtract the new number by the original number
294 - 663 = -369
-369 ÷ 663 = -0.5565610859728507
-0.5565610859728507 x 100 = -55.66%