-19.17% is the change from 647 to 523
Calculation steps:
[( 523 - 647 ) ÷ 647] x 100 = -19.17%
Formula
Percentage change = [(523 - 647) / 647] x 100
Subtract the new number by the original number
523 - 647 = -124
-124 ÷ 647 = -0.19165378670788252
-0.19165378670788252 x 100 = -19.17%