-19.73% is the change from 669 to 537
Calculation steps:
[( 537 - 669 ) ÷ 669] x 100 = -19.73%
Formula
Percentage change = [(537 - 669) / 669] x 100
Subtract the new number by the original number
537 - 669 = -132
-132 ÷ 669 = -0.19730941704035873
-0.19730941704035873 x 100 = -19.73%