-33.02% is the change from 318 to 213
Calculation steps:
[( 213 - 318 ) ÷ 318] x 100 = -33.02%
Formula
Percentage change = [(213 - 318) / 318] x 100
Subtract the new number by the original number
213 - 318 = -105
-105 ÷ 318 = -0.330188679245283
-0.330188679245283 x 100 = -33.02%