-85.84% is the change from 699 to 99
Calculation steps:
[( 99 - 699 ) ÷ 699] x 100 = -85.84%
Formula
Percentage change = [(99 - 699) / 699] x 100
Subtract the new number by the original number
99 - 699 = -600
-600 ÷ 699 = -0.8583690987124464
-0.8583690987124464 x 100 = -85.84%