-62.33% is the change from 507 to 191
Calculation steps:
[( 191 - 507 ) ÷ 507] x 100 = -62.33%
Formula
Percentage change = [(191 - 507) / 507] x 100
Subtract the new number by the original number
191 - 507 = -316
-316 ÷ 507 = -0.6232741617357002
-0.6232741617357002 x 100 = -62.33%