-94.1% is the change from 356 to 21
Calculation steps:
[( 21 - 356 ) ÷ 356] x 100 = -94.1%
Formula
Percentage change = [(21 - 356) / 356] x 100
Subtract the new number by the original number
21 - 356 = -335
-335 ÷ 356 = -0.9410112359550562
-0.9410112359550562 x 100 = -94.1%