-77.94% is the change from 671 to 148
Calculation steps:
[( 148 - 671 ) ÷ 671] x 100 = -77.94%
Formula
Percentage change = [(148 - 671) / 671] x 100
Subtract the new number by the original number
148 - 671 = -523
-523 ÷ 671 = -0.7794336810730254
-0.7794336810730254 x 100 = -77.94%