-78.57% is the change from 336 to 72
Calculation steps:
[( 72 - 336 ) ÷ 336] x 100 = -78.57%
Formula
Percentage change = [(72 - 336) / 336] x 100
Subtract the new number by the original number
72 - 336 = -264
-264 ÷ 336 = -0.7857142857142857
-0.7857142857142857 x 100 = -78.57%