-38.05% is the change from 318 to 197
Calculation steps:
[( 197 - 318 ) ÷ 318] x 100 = -38.05%
Formula
Percentage change = [(197 - 318) / 318] x 100
Subtract the new number by the original number
197 - 318 = -121
-121 ÷ 318 = -0.3805031446540881
-0.3805031446540881 x 100 = -38.05%