-3.72% is the change from 537 to 517
Calculation steps:
[( 517 - 537 ) ÷ 537] x 100 = -3.72%
Formula
Percentage change = [(517 - 537) / 537] x 100
Subtract the new number by the original number
517 - 537 = -20
-20 ÷ 537 = -0.037243947858473
-0.037243947858473 x 100 = -3.72%