-65.66% is the change from 664 to 228
Calculation steps:
[( 228 - 664 ) ÷ 664] x 100 = -65.66%
Formula
Percentage change = [(228 - 664) / 664] x 100
Subtract the new number by the original number
228 - 664 = -436
-436 ÷ 664 = -0.6566265060240963
-0.6566265060240963 x 100 = -65.66%