-70.75% is the change from 506 to 148
Calculation steps:
[( 148 - 506 ) ÷ 506] x 100 = -70.75%
Formula
Percentage change = [(148 - 506) / 506] x 100
Subtract the new number by the original number
148 - 506 = -358
-358 ÷ 506 = -0.7075098814229249
-0.7075098814229249 x 100 = -70.75%