-75.63% is the change from 517 to 126
Calculation steps:
[( 126 - 517 ) ÷ 517] x 100 = -75.63%
Formula
Percentage change = [(126 - 517) / 517] x 100
Subtract the new number by the original number
126 - 517 = -391
-391 ÷ 517 = -0.7562862669245648
-0.7562862669245648 x 100 = -75.63%