-18.66% is the change from 611 to 497
Calculation steps:
[( 497 - 611 ) ÷ 611] x 100 = -18.66%
Formula
Percentage change = [(497 - 611) / 611] x 100
Subtract the new number by the original number
497 - 611 = -114
-114 ÷ 611 = -0.18657937806873978
-0.18657937806873978 x 100 = -18.66%