-69.55% is the change from 647 to 197
Calculation steps:
[( 197 - 647 ) ÷ 647] x 100 = -69.55%
Formula
Percentage change = [(197 - 647) / 647] x 100
Subtract the new number by the original number
197 - 647 = -450
-450 ÷ 647 = -0.6955177743431221
-0.6955177743431221 x 100 = -69.55%