-67.02% is the change from 664 to 219
Calculation steps:
[( 219 - 664 ) ÷ 664] x 100 = -67.02%
Formula
Percentage change = [(219 - 664) / 664] x 100
Subtract the new number by the original number
219 - 664 = -445
-445 ÷ 664 = -0.6701807228915663
-0.6701807228915663 x 100 = -67.02%