-66.33% is the change from 591 to 199
Calculation steps:
[( 199 - 591 ) ÷ 591] x 100 = -66.33%
Formula
Percentage change = [(199 - 591) / 591] x 100
Subtract the new number by the original number
199 - 591 = -392
-392 ÷ 591 = -0.6632825719120136
-0.6632825719120136 x 100 = -66.33%