-35.12% is the change from 336 to 218
Calculation steps:
[( 218 - 336 ) ÷ 336] x 100 = -35.12%
Formula
Percentage change = [(218 - 336) / 336] x 100
Subtract the new number by the original number
218 - 336 = -118
-118 ÷ 336 = -0.35119047619047616
-0.35119047619047616 x 100 = -35.12%