-94.26% is the change from 366 to 21
Calculation steps:
[( 21 - 366 ) ÷ 366] x 100 = -94.26%
Formula
Percentage change = [(21 - 366) / 366] x 100
Subtract the new number by the original number
21 - 366 = -345
-345 ÷ 366 = -0.9426229508196722
-0.9426229508196722 x 100 = -94.26%