-74.5% is the change from 545 to 139
Calculation steps:
[( 139 - 545 ) ÷ 545] x 100 = -74.5%
Formula
Percentage change = [(139 - 545) / 545] x 100
Subtract the new number by the original number
139 - 545 = -406
-406 ÷ 545 = -0.744954128440367
-0.744954128440367 x 100 = -74.5%