-94.02% is the change from 819 to 49
Calculation steps:
[( 49 - 819 ) ÷ 819] x 100 = -94.02%
Formula
Percentage change = [(49 - 819) / 819] x 100
Subtract the new number by the original number
49 - 819 = -770
-770 ÷ 819 = -0.9401709401709402
-0.9401709401709402 x 100 = -94.02%