-86.27% is the change from 284 to 39
Calculation steps:
[( 39 - 284 ) ÷ 284] x 100 = -86.27%
Formula
Percentage change = [(39 - 284) / 284] x 100
Subtract the new number by the original number
39 - 284 = -245
-245 ÷ 284 = -0.8626760563380281
-0.8626760563380281 x 100 = -86.27%