-71.88% is the change from 192 to 54
Calculation steps:
[( 54 - 192 ) ÷ 192] x 100 = -71.88%
Formula
Percentage change = [(54 - 192) / 192] x 100
Subtract the new number by the original number
54 - 192 = -138
-138 ÷ 192 = -0.71875
-0.71875 x 100 = -71.88%