-67.39% is the change from 647 to 211
Calculation steps:
[( 211 - 647 ) ÷ 647] x 100 = -67.39%
Formula
Percentage change = [(211 - 647) / 647] x 100
Subtract the new number by the original number
211 - 647 = -436
-436 ÷ 647 = -0.6738794435857806
-0.6738794435857806 x 100 = -67.39%