-77.2% is the change from 649 to 148
Calculation steps:
[( 148 - 649 ) ÷ 649] x 100 = -77.2%
Formula
Percentage change = [(148 - 649) / 649] x 100
Subtract the new number by the original number
148 - 649 = -501
-501 ÷ 649 = -0.7719568567026194
-0.7719568567026194 x 100 = -77.2%