-23.06% is the change from 824 to 634
Calculation steps:
[( 634 - 824 ) ÷ 824] x 100 = -23.06%
Formula
Percentage change = [(634 - 824) / 824] x 100
Subtract the new number by the original number
634 - 824 = -190
-190 ÷ 824 = -0.23058252427184467
-0.23058252427184467 x 100 = -23.06%