-41.48% is the change from 663 to 388
Calculation steps:
[( 388 - 663 ) ÷ 663] x 100 = -41.48%
Formula
Percentage change = [(388 - 663) / 663] x 100
Subtract the new number by the original number
388 - 663 = -275
-275 ÷ 663 = -0.41478129713423834
-0.41478129713423834 x 100 = -41.48%