-71.39% is the change from 346 to 99
Calculation steps:
[( 99 - 346 ) ÷ 346] x 100 = -71.39%
Formula
Percentage change = [(99 - 346) / 346] x 100
Subtract the new number by the original number
99 - 346 = -247
-247 ÷ 346 = -0.7138728323699421
-0.7138728323699421 x 100 = -71.39%