-77.09% is the change from 406 to 93
Calculation steps:
[( 93 - 406 ) ÷ 406] x 100 = -77.09%
Formula
Percentage change = [(93 - 406) / 406] x 100
Subtract the new number by the original number
93 - 406 = -313
-313 ÷ 406 = -0.770935960591133
-0.770935960591133 x 100 = -77.09%