-17.47% is the change from 647 to 534
Calculation steps:
[( 534 - 647 ) ÷ 647] x 100 = -17.47%
Formula
Percentage change = [(534 - 647) / 647] x 100
Subtract the new number by the original number
534 - 647 = -113
-113 ÷ 647 = -0.17465224111282843
-0.17465224111282843 x 100 = -17.47%