-90.1% is the change from 192 to 19
Calculation steps:
[( 19 - 192 ) ÷ 192] x 100 = -90.1%
Formula
Percentage change = [(19 - 192) / 192] x 100
Subtract the new number by the original number
19 - 192 = -173
-173 ÷ 192 = -0.9010416666666666
-0.9010416666666666 x 100 = -90.1%