-39.12% is the change from 317 to 193
Calculation steps:
[( 193 - 317 ) ÷ 317] x 100 = -39.12%
Formula
Percentage change = [(193 - 317) / 317] x 100
Subtract the new number by the original number
193 - 317 = -124
-124 ÷ 317 = -0.3911671924290221
-0.3911671924290221 x 100 = -39.12%