-94.59% is the change from 388 to 21
Calculation steps:
[( 21 - 388 ) ÷ 388] x 100 = -94.59%
Formula
Percentage change = [(21 - 388) / 388] x 100
Subtract the new number by the original number
21 - 388 = -367
-367 ÷ 388 = -0.9458762886597938
-0.9458762886597938 x 100 = -94.59%