-34.34% is the change from 664 to 436
Calculation steps:
[( 436 - 664 ) ÷ 664] x 100 = -34.34%
Formula
Percentage change = [(436 - 664) / 664] x 100
Subtract the new number by the original number
436 - 664 = -228
-228 ÷ 664 = -0.3433734939759036
-0.3433734939759036 x 100 = -34.34%