-81.84% is the change from 402 to 73
Calculation steps:
[( 73 - 402 ) ÷ 402] x 100 = -81.84%
Formula
Percentage change = [(73 - 402) / 402] x 100
Subtract the new number by the original number
73 - 402 = -329
-329 ÷ 402 = -0.818407960199005
-0.818407960199005 x 100 = -81.84%