-65.49% is the change from 823 to 284
Calculation steps:
[( 284 - 823 ) ÷ 823] x 100 = -65.49%
Formula
Percentage change = [(284 - 823) / 823] x 100
Subtract the new number by the original number
284 - 823 = -539
-539 ÷ 823 = -0.6549210206561361
-0.6549210206561361 x 100 = -65.49%