-1.98% is the change from 658 to 645
Calculation steps:
[( 645 - 658 ) ÷ 658] x 100 = -1.98%
Formula
Percentage change = [(645 - 658) / 658] x 100
Subtract the new number by the original number
645 - 658 = -13
-13 ÷ 658 = -0.019756838905775075
-0.019756838905775075 x 100 = -1.98%