-81.1% is the change from 492 to 93
Calculation steps:
[( 93 - 492 ) ÷ 492] x 100 = -81.1%
Formula
Percentage change = [(93 - 492) / 492] x 100
Subtract the new number by the original number
93 - 492 = -399
-399 ÷ 492 = -0.8109756097560976
-0.8109756097560976 x 100 = -81.1%