-29.99% is the change from 827 to 579
Calculation steps:
[( 579 - 827 ) ÷ 827] x 100 = -29.99%
Formula
Percentage change = [(579 - 827) / 827] x 100
Subtract the new number by the original number
579 - 827 = -248
-248 ÷ 827 = -0.2998790810157195
-0.2998790810157195 x 100 = -29.99%