-49.1% is the change from 387 to 197
Calculation steps:
[( 197 - 387 ) ÷ 387] x 100 = -49.1%
Formula
Percentage change = [(197 - 387) / 387] x 100
Subtract the new number by the original number
197 - 387 = -190
-190 ÷ 387 = -0.4909560723514212
-0.4909560723514212 x 100 = -49.1%