-85.97% is the change from 663 to 93
Calculation steps:
[( 93 - 663 ) ÷ 663] x 100 = -85.97%
Formula
Percentage change = [(93 - 663) / 663] x 100
Subtract the new number by the original number
93 - 663 = -570
-570 ÷ 663 = -0.8597285067873304
-0.8597285067873304 x 100 = -85.97%