-38.06% is the change from 310 to 192
Calculation steps:
[( 192 - 310 ) ÷ 310] x 100 = -38.06%
Formula
Percentage change = [(192 - 310) / 310] x 100
Subtract the new number by the original number
192 - 310 = -118
-118 ÷ 310 = -0.38064516129032255
-0.38064516129032255 x 100 = -38.06%