-20.66% is the change from 392 to 311
Calculation steps:
[( 311 - 392 ) ÷ 392] x 100 = -20.66%
Formula
Percentage change = [(311 - 392) / 392] x 100
Subtract the new number by the original number
311 - 392 = -81
-81 ÷ 392 = -0.2066326530612245
-0.2066326530612245 x 100 = -20.66%