-77.88% is the change from 669 to 148
Calculation steps:
[( 148 - 669 ) ÷ 669] x 100 = -77.88%
Formula
Percentage change = [(148 - 669) / 669] x 100
Subtract the new number by the original number
148 - 669 = -521
-521 ÷ 669 = -0.7787742899850523
-0.7787742899850523 x 100 = -77.88%