-21.74% is the change from 690 to 540
Calculation steps:
[( 540 - 690 ) ÷ 690] x 100 = -21.74%
Formula
Percentage change = [(540 - 690) / 690] x 100
Subtract the new number by the original number
540 - 690 = -150
-150 ÷ 690 = -0.21739130434782608
-0.21739130434782608 x 100 = -21.74%