-15.03% is the change from 366 to 311
Calculation steps:
[( 311 - 366 ) ÷ 366] x 100 = -15.03%
Formula
Percentage change = [(311 - 366) / 366] x 100
Subtract the new number by the original number
311 - 366 = -55
-55 ÷ 366 = -0.15027322404371585
-0.15027322404371585 x 100 = -15.03%