-93.95% is the change from 347 to 21
Calculation steps:
[( 21 - 347 ) ÷ 347] x 100 = -93.95%
Formula
Percentage change = [(21 - 347) / 347] x 100
Subtract the new number by the original number
21 - 347 = -326
-326 ÷ 347 = -0.9394812680115274
-0.9394812680115274 x 100 = -93.95%