-92.91% is the change from 296 to 21
Calculation steps:
[( 21 - 296 ) ÷ 296] x 100 = -92.91%
Formula
Percentage change = [(21 - 296) / 296] x 100
Subtract the new number by the original number
21 - 296 = -275
-275 ÷ 296 = -0.9290540540540541
-0.9290540540540541 x 100 = -92.91%