-21.01% is the change from 690 to 545
Calculation steps:
[( 545 - 690 ) ÷ 690] x 100 = -21.01%
Formula
Percentage change = [(545 - 690) / 690] x 100
Subtract the new number by the original number
545 - 690 = -145
-145 ÷ 690 = -0.21014492753623187
-0.21014492753623187 x 100 = -21.01%