According to Newton's law of universal gravitation, the force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

Therefore, if the mass of the Sun were reduced by 75000 times, the force of gravity between the Sun and the Earth would be reduced by the same factor.

This would cause the Earth's orbit to become much larger, and the Earth would take much longer to complete one orbit around the Sun.

In fact, the Earth's orbit would become so large that it would eventually leave the Solar System and drift off into space.