-84.47% is the change from 824 to 128
Calculation steps:
[( 128 - 824 ) ÷ 824] x 100 = -84.47%
Formula
Percentage change = [(128 - 824) / 824] x 100
Subtract the new number by the original number
128 - 824 = -696
-696 ÷ 824 = -0.8446601941747572
-0.8446601941747572 x 100 = -84.47%