-70.98% is the change from 510 to 148
Calculation steps:
[( 148 - 510 ) ÷ 510] x 100 = -70.98%
Formula
Percentage change = [(148 - 510) / 510] x 100
Subtract the new number by the original number
148 - 510 = -362
-362 ÷ 510 = -0.7098039215686275
-0.7098039215686275 x 100 = -70.98%