-18.99% is the change from 611 to 495
Calculation steps:
[( 495 - 611 ) ÷ 611] x 100 = -18.99%
Formula
Percentage change = [(495 - 611) / 611] x 100
Subtract the new number by the original number
495 - 611 = -116
-116 ÷ 611 = -0.18985270049099837
-0.18985270049099837 x 100 = -18.99%