-39.38% is the change from 320 to 194
Calculation steps:
[( 194 - 320 ) ÷ 320] x 100 = -39.38%
Formula
Percentage change = [(194 - 320) / 320] x 100
Subtract the new number by the original number
194 - 320 = -126
-126 ÷ 320 = -0.39375
-0.39375 x 100 = -39.38%