-82.06% is the change from 407 to 73
Calculation steps:
[( 73 - 407 ) ÷ 407] x 100 = -82.06%
Formula
Percentage change = [(73 - 407) / 407] x 100
Subtract the new number by the original number
73 - 407 = -334
-334 ÷ 407 = -0.8206388206388207
-0.8206388206388207 x 100 = -82.06%