-33.97% is the change from 471 to 311
Calculation steps:
[( 311 - 471 ) ÷ 471] x 100 = -33.97%
Formula
Percentage change = [(311 - 471) / 471] x 100
Subtract the new number by the original number
311 - 471 = -160
-160 ÷ 471 = -0.33970276008492567
-0.33970276008492567 x 100 = -33.97%