-92.93% is the change from 297 to 21
Calculation steps:
[( 21 - 297 ) ÷ 297] x 100 = -92.93%
Formula
Percentage change = [(21 - 297) / 297] x 100
Subtract the new number by the original number
21 - 297 = -276
-276 ÷ 297 = -0.9292929292929293
-0.9292929292929293 x 100 = -92.93%