-75.93% is the change from 669 to 161
Calculation steps:
[( 161 - 669 ) ÷ 669] x 100 = -75.93%
Formula
Percentage change = [(161 - 669) / 669] x 100
Subtract the new number by the original number
161 - 669 = -508
-508 ÷ 669 = -0.7593423019431988
-0.7593423019431988 x 100 = -75.93%