-38.44% is the change from 320 to 197
Calculation steps:
[( 197 - 320 ) ÷ 320] x 100 = -38.44%
Formula
Percentage change = [(197 - 320) / 320] x 100
Subtract the new number by the original number
197 - 320 = -123
-123 ÷ 320 = -0.384375
-0.384375 x 100 = -38.44%