-65.81% is the change from 664 to 227
Calculation steps:
[( 227 - 664 ) ÷ 664] x 100 = -65.81%
Formula
Percentage change = [(227 - 664) / 664] x 100
Subtract the new number by the original number
227 - 664 = -437
-437 ÷ 664 = -0.6581325301204819
-0.6581325301204819 x 100 = -65.81%