-1.05% is the change from 664 to 657
Calculation steps:
[( 657 - 664 ) ÷ 664] x 100 = -1.05%
Formula
Percentage change = [(657 - 664) / 664] x 100
Subtract the new number by the original number
657 - 664 = -7
-7 ÷ 664 = -0.010542168674698794
-0.010542168674698794 x 100 = -1.05%