-30.38% is the change from 316 to 220
Calculation steps:
[( 220 - 316 ) ÷ 316] x 100 = -30.38%
Formula
Percentage change = [(220 - 316) / 316] x 100
Subtract the new number by the original number
220 - 316 = -96
-96 ÷ 316 = -0.3037974683544304
-0.3037974683544304 x 100 = -30.38%