-84.08% is the change from 628 to 100
Calculation steps:
[( 100 - 628 ) ÷ 628] x 100 = -84.08%
Formula
Percentage change = [(100 - 628) / 628] x 100
Subtract the new number by the original number
100 - 628 = -528
-528 ÷ 628 = -0.8407643312101911
-0.8407643312101911 x 100 = -84.08%