-1.89% is the change from 317 to 311
Calculation steps:
[( 311 - 317 ) ÷ 317] x 100 = -1.89%
Formula
Percentage change = [(311 - 317) / 317] x 100
Subtract the new number by the original number
311 - 317 = -6
-6 ÷ 317 = -0.01892744479495268
-0.01892744479495268 x 100 = -1.89%