-64.56% is the change from 539 to 191
Calculation steps:
[( 191 - 539 ) ÷ 539] x 100 = -64.56%
Formula
Percentage change = [(191 - 539) / 539] x 100
Subtract the new number by the original number
191 - 539 = -348
-348 ÷ 539 = -0.6456400742115028
-0.6456400742115028 x 100 = -64.56%