-92.28% is the change from 272 to 21
Calculation steps:
[( 21 - 272 ) ÷ 272] x 100 = -92.28%
Formula
Percentage change = [(21 - 272) / 272] x 100
Subtract the new number by the original number
21 - 272 = -251
-251 ÷ 272 = -0.9227941176470589
-0.9227941176470589 x 100 = -92.28%