377.61% is the change from 67 to 320
Calculation steps:
[( 320 - 67 ) ÷ 67] x 100 = 377.61%
Formula
Percentage change = [(320 - 67) / 67] x 100
Subtract the new number by the original number
320 - 67 = 253
253 ÷ 67 = 3.7761194029850746
3.7761194029850746 x 100 = 377.61%