-7.98% is the change from 664 to 611
Calculation steps:
[( 611 - 664 ) ÷ 664] x 100 = -7.98%
Formula
Percentage change = [(611 - 664) / 664] x 100
Subtract the new number by the original number
611 - 664 = -53
-53 ÷ 664 = -0.07981927710843373
-0.07981927710843373 x 100 = -7.98%