-69.68% is the change from 630 to 191
Calculation steps:
[( 191 - 630 ) ÷ 630] x 100 = -69.68%
Formula
Percentage change = [(191 - 630) / 630] x 100
Subtract the new number by the original number
191 - 630 = -439
-439 ÷ 630 = -0.6968253968253968
-0.6968253968253968 x 100 = -69.68%