-77.09% is the change from 838 to 192
Calculation steps:
[( 192 - 838 ) ÷ 838] x 100 = -77.09%
Formula
Percentage change = [(192 - 838) / 838] x 100
Subtract the new number by the original number
192 - 838 = -646
-646 ÷ 838 = -0.7708830548926014
-0.7708830548926014 x 100 = -77.09%