-33.12% is the change from 477 to 319
Calculation steps:
[( 319 - 477 ) ÷ 477] x 100 = -33.12%
Formula
Percentage change = [(319 - 477) / 477] x 100
Subtract the new number by the original number
319 - 477 = -158
-158 ÷ 477 = -0.3312368972746331
-0.3312368972746331 x 100 = -33.12%