-82.47% is the change from 405 to 71
Calculation steps:
[( 71 - 405 ) ÷ 405] x 100 = -82.47%
Formula
Percentage change = [(71 - 405) / 405] x 100
Subtract the new number by the original number
71 - 405 = -334
-334 ÷ 405 = -0.8246913580246914
-0.8246913580246914 x 100 = -82.47%