-35.85% is the change from 477 to 306
Calculation steps:
[( 306 - 477 ) ÷ 477] x 100 = -35.85%
Formula
Percentage change = [(306 - 477) / 477] x 100
Subtract the new number by the original number
306 - 477 = -171
-171 ÷ 477 = -0.3584905660377358
-0.3584905660377358 x 100 = -35.85%