-29.58% is the change from 311 to 219
Calculation steps:
[( 219 - 311 ) ÷ 311] x 100 = -29.58%
Formula
Percentage change = [(219 - 311) / 311] x 100
Subtract the new number by the original number
219 - 311 = -92
-92 ÷ 311 = -0.2958199356913183
-0.2958199356913183 x 100 = -29.58%